I tend to get more persistent when I can't get straight answers to fairly simple questions. The ATSB, having produced various works of fiction for various reasons for a substantial period, means I am presumptively dubious about the content.
In the case of ZCR, the mystery of why the rudder trim was where it was post-impact may be a mystery forever. But the question whether an aircraft of this kind is 'handleable' by an ordinary pilot, with full nose left rudder trim and the engines delivering full power after accelerating through 140kts, is binary.
If the ATSB probably got it right, I should concede that.